BALTIMORE (USA Today) -- Indianapolis Colts offensive coordinator Bruce Arians is in a Baltimore hospital with nausea and headaches and will not call Sunday's AFC wild-card playoff game against the Baltimore Ravens, according to a team spokesman.

Arians was hospitalized Thursday at the University of Maryland Shock Trauma Center with what was thought to be flu-like symptoms.

The team is not characterizing the illness that led to his hospitalization Sunday. He is expected to remain overnight for further evaluation, but the Colts are saying he's doing well at this point.

Clyde Christensen, the team's quarterbacks coach, will call the plays on offense against Baltimore.

Arians' agent, Mike Brown, told USA TODAY Sports that doctors think Arians has an inner-ear infection. He said Arians insisted on coaching, even if it meant sitting in a booth, but doctors and team officials would not allow it.

CBS reported Arians was removed from a team function on a gurney Thursday.

Arians, 60, took over head-coaching duties this season during Chuck Pagano's treatment for leukemia. He led the team to a 9-3 record, a run that led to consideration for coach of the year honors as well as interviews for vacant head-coaching jobs.

Arians is scheduled to meet with the Philadelphia Eagles and Chicago Bears on Wednesday and Thursday, and that has not changed, Brown said. The San Diego Chargers are expected Monday to request permission to interview Arians.